simple Git wire protocol parser/serializer in Python

git-protocol.py

MAGIC_DELIMITER = 69420

def serialize_git_pack(args):
	git_list = args[0]
	for extra in args[1:]:
		git_list.append(MAGIC_DELIMITER)
		git_list.extend(extra)

	res = ''
	for arg in git_list:
		if arg is MAGIC_DELIMITER:
			res += '0001'
		else:
			res += (hex(len(arg) + 4)[2:]).zfill(4) + arg
	res += '0000'
	return res

def deserialize_git_pack(data):
	git_list = []
	while len(data):
		size = int(data[0:4], 16)
		if size == 0:
			# flush-pkt
			break
		elif size == 1:
			# delim-pkt
			res.append(MAGIC_DELIMITER)
			continue
		elif size == 2:
			# response-end-pkt
			break

		size -= 4
		data = data[4:]

		content = data[:size]
		git_list.append(content)

		data = data[size:]

	res = [[]]
	for param in git_list:
		if param is MAGIC_DELIMITER:
			res.append([])
			continue
		res[-1].append(param)

	return res